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Basalt fiber grid reinforced concrete dismantling-free column formwork and preparation method thereof

A technology of basalt fiber and reinforced concrete, which is applied in the direction of columns, pier columns, pillars, etc., can solve the problems of inability to prepare dismantled formwork for columns with complex shapes, low cost, and doubtful impact on durability, so as to reduce the difficulty of formwork and manufacture Period, convenient preparation, and the effect of improving the overall mechanical performance

Inactive Publication Date: 2018-11-06
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reinforcement cage is placed in ultra-high-performance concrete, and the core is plain concrete. Therefore, the ultra-high-performance concrete layer is relatively thick, and the cost is not low. The minimum protective layer of steel reinforcement is only 10mm, and its impact on durability is doubtful.
In addition, the announced formwork and its preparation method are only for cylindrical or square column sections, and it is impossible to prepare column-free formwork with complex shapes.

Method used

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  • Basalt fiber grid reinforced concrete dismantling-free column formwork and preparation method thereof
  • Basalt fiber grid reinforced concrete dismantling-free column formwork and preparation method thereof
  • Basalt fiber grid reinforced concrete dismantling-free column formwork and preparation method thereof

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preparation example Construction

[0050] The present invention also provides a method for preparing a basalt fiber grid-reinforced concrete non-dismantling column mold. The preparation method includes the following steps:

[0051] 1) According to the column design information, determine the shape parameters of the non-dismantling column template and the 2 parameters of the basalt fiber mesh;

[0052] 2) According to the shape parameter design of the free-dismantling template, the geometric parameters of the inward mold 3 and the outward mold 4 are obtained;

[0053] 3) Use additive manufacturing technology to make the inversion mold 3, and then fix the basalt fiber grid 2 on the inversion mold 3;

[0054] 4) Use additive manufacturing technology to make the overturning mold 4, which is combined with the inward turning mold 3 to form a whole;

[0055] 5) Pour ultra-high performance concrete between the inward turning form 3 and the outward turning form 4;

[0056] 6) Curing and demoulding to obtain the said basalt fiber g...

Embodiment 1

[0063] A basalt fiber grid reinforced concrete non-dismantling column form (such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 (Shown), the non-dismantling column formwork includes a hollow ultra-high performance concrete layer 1 and a basalt fiber grid 2 built into the wall of the hollow ultra-high performance concrete layer 1. The hollow ultra-high performance concrete layer 1 has a hollow elliptical cylindrical shape , The diameter of the upper bottom surface is smaller than the lower bottom surface, the thickness is 20mm, the slump extension is 750mm, the 28d compressive strength is 148.1MPa, and the flexural strength is 18.4MPa; there is a height on the inner surface of the hollow ultra-high performance concrete layer 1. It is a 6mm rectangular parallelepiped shear bump 11;

[0064] In the one-layer wall of the hollow ultra-high performance concrete layer, a layer of basalt fiber grids 2 is arranged along the circumferential direction of the layer wall...

Embodiment 2

[0082] A basalt fiber grid reinforced concrete non-dismantling column formwork. The dismantling-free column formwork includes a hollow ultra-high performance concrete layer 1 and a basalt fiber grid 2 built into the wall of the hollow ultra-high performance concrete layer 1. The hollow ultra-high performance The shape of the concrete layer 1 is a hollow square column, the thickness is 30mm, its slump extension is 550mm, the 28d compressive strength is 120MPa, and the flexural strength is 15.1MPa; the inner surface of the hollow ultra-high performance concrete layer 1 has a height of 10mm hemispherical shear bump 11;

[0083] In the one-layer wall of the hollow ultra-high performance concrete layer, two layers of basalt fiber grids 2 are arranged along the circumferential direction of the layer wall, the spacing between the two layers is 10mm, and the net spacing of the basalt fiber grids 2 is 12mm.

[0084] A preparation method of a basalt fiber grid reinforced concrete non-dismant...

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Abstract

The invention discloses a basalt fiber grid reinforced concrete dismantling-free column formwork and a preparation method thereof. The basalt fiber grid reinforced concrete dismantling-free column formwork comprises a hollow ultra-high performance concrete layer and basalt fiber grids, and shear-resistant convex blocks are arranged on the inner surface of the hollow ultra-high performance concretelayer. The preparation method of the basalt fiber grid reinforced concrete dismantling-free column formwork comprises the following steps that (1) according to column design information, shape parameters of the dismantling-free column formwork and parameters of the basalt fiber grids are determined; (2) according to design of the shape parameters of the dismantling-free formwork, geometric parameters of an inner turnover formwork and an outer turnover formwork are obtained; (3) the inner turnover formwork is manufactured through an additive manufacturing technology, and then the basalt fibergrids are fixed to the inner turnover formwork; (4) the outer turnover formwork is manufactured through the additive manufacturing technology and combined with the inner turnover formwork to form a whole; (5) ultra-high performance concrete is poured between the inner turnover formwork and the outer turnover formwork; and (6) curing and formwork dismantling are conducted, and the basalt fiber gridreinforced concrete dismantling-free column formwork is obtained. The basalt fiber grid reinforced concrete dismantling-free column formwork is suitable for manufacturing of personalized building curved columns, and is good in integrity, low in cost, excellent in durability and convenient to manufacture.

Description

Technical field [0001] The invention relates to a basalt fiber grid reinforced concrete non-dismantling column mold and a preparation method thereof, and belongs to the technical field of composite column structures in civil engineering. Background technique [0002] In recent years, the fast-developing Chinese economy has further improved the people's aesthetic level. The traditional and regular architectural styles cannot meet the requirements of the diversified development of the city. The pursuit of individualized architecture has become a new demand. Some high-level architects, represented by Zaha Hadid, are good at boldly using space and geometric structures and are highly praised by the domestic market. The Guangzhou Grand Theater and the Nanjing Youth Olympic Center are all such masterpieces of architectural personality. Curves are an important means for architects to express their design concepts. In the traditional cast-in-place construction method, how to cast these co...

Claims

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Application Information

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IPC IPC(8): E04C3/34B28B1/52B28B23/02
CPCB28B1/52B28B23/02E04C3/34
Inventor 周臻张逸王永泉田会文
Owner SOUTHEAST UNIV
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